Full wave electronic control with soft start, temperature monitoring, overload protection and a continuous speed control trigger for a controlled run-up to the optimum speed. Large two-speed gear unit with optimum ratio for powerful torque with the right speed for different materials. Ergonomic handle on the drive unit is lightweight and has an anti-slip coating. Fatigue free arm posture and upright body posture while using allows comfortable operation. 1st speed for use with the RS 1 mixer paddle for low-viscosity materials. 2nd speed for use with the RS 0 mixer paddle has a counter-flow effect for mixing highly fluid materials.